Vanguard Heating VMH10TNB Troubleshooting, Continued, Observed Problem, Possible Cause, Remedy

Models: VMH10TNB

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OWNER’S MANUAL

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

Burner does not light after ODS/pilot is lit

1.

Burner orifice is clogged

1.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 23) or replace burner orifice

 

2.

Burner orifice diameter is too small

2.

Replace burner orifice

 

3.

Inlet gas pressure is too low

3.

Contact local natural gas company

 

 

 

 

 

Delayed ignition of burner

1.

Manifold pressure is too low

1.

Contact local natural gas company

 

2.

Burner orifice is clogged

2.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 23) or replace burner orifice

 

 

 

 

 

Burner backfiring during combustion

1.

Burner orifice is clogged or damaged

1.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 23) or replace burner orifice

 

2.

Burner damaged

2.

Replace burner pressure

 

3.

Low inlet gas pressure

3.

Contact local natural gas company

 

4.

Gas regulator defective

4.

Replace gas regulator

 

 

 

 

 

Slight smoke or odor during initial operation

1.

Residues from manufacturing processes

1.

Problem will stop after a few hours of

 

 

 

 

operation

 

 

 

 

 

Fireplace produces a whistling noise when

1.

Air in gas line

1.

Operate burner until air is removed from

burner is lit

 

 

 

line. Have gas line checked by local

 

 

 

 

natural gas company

 

2.

Air passageways on fireplace blocked

2. Observe minimum installation clearances

 

 

 

 

(see pages 8 through 10)

 

3.

Dirty or partially clogged burner orifice

3.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 23) or replace burner orifice

White powder residue forming within burner box or on adjacent walls or furniture

1.When heated, vapors from furniture pol- ish, wax, carpet cleaners, etc. turn into white powder residue

1.Turn heater off when using furniture polish, wax, carpet cleaners, or similar products

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Continued

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Vanguard Heating VMH10TNB installation manual Troubleshooting, Continued, Observed Problem, Possible Cause, Remedy